These are a little suburb-ist, and some have been recycled from old jokes I used to hear when, back in the 1980s, I told people in the city that I lived near Blacktown, but they're still funny...unless you live in Campbelltown I suppose :
Q. Two Campbelltown girls jump off a cliff. Who wins?
Q. What does a Campbelltown girl use as protection during sex?
A. A bus shelter.
Q. Why did the Campbelltown girl cross the road?
A. To start a fight with a complete stranger for no reason whatsoever.
Q. What do you call a Campbelltown girl in a white tracksuit?
A. The bride.
Q. What's the first question during a Campbelltown quiz night?
A. "What you looking at?"
Q. What's the difference between a Campbelltown boy and a Campbelltown girl?
A. A Campbelltown girl has a higher sperm count.
(all these jokes were taken from an e-mail doing the rounds of inboxes in the finance industry)